Pedal driving device

Abstract

The invention discloses a pedal driving device. The pedal driving device mainly comprises a frame (17), a gearbox (11) mounted at the back end of the frame (17), a driving rear wheel (13) mounted on a gearbox output shaft (27), an overrunning clutch (28) mounted on a gearbox input shaft (22) and pedal driving devices mounted on the frame (17) and the gearbox (11), and is characterized in that the pedal driving devices further comprise additionally arranged gear driving arms (8) and driving arm movable joints (6); and an independent pedal driving device driving system is provided, so that such defects as nonuniform stress, easy rupture and weak durability of the overrunning clutch caused by single-edge stress in the pulling of a drive connecting rod in the stepping of a pedal drive by users due to the use of the drive connecting rod of a bicycle with Chinese patent number of 201420590209.3 as a single-edge single structure in the prior art are solved, and such defects as labor waste in driving and possibility of touching the pedal driving arm to the drive rear wheel caused by direct installation of the back end of the pedal driving arm outside the gearbox are solved.

Description

technical field [0001] The invention belongs to a bicycle drive device, in particular to a pedal drive device that allows a user to step on a pedal up and down in a standing manner to drive the bicycle body forward, that is, to use the gravity of the person to rotate the wheels under the foot. Background technique [0002] The best and practical tool for traditional self-powered walking is the bicycle: it is widely used in the world, and the driving device of the bicycle is an important part of the bicycle. The usual driving device of the bicycle is to use a disc to drive the chain sprocket The structure relies on the two feet to rotate in a circle to drive the wheel connected to the flywheel to rotate forward. In order to make the two feet move in a circle, the buttocks must be erected, and the body is in an abnormal state, which is not convenient for exerting force. There is also a kind of scooter similar to that most of them use one foot to pedal the ground to obtain powe...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to address the shortcomings of the bicycle drive device in the prior art, to solve the problem that the output shaft will be twisted when the automatic runner encounters uneven roads during driving in the prior art, so that one of the wheels cannot be in contact with the ground. When the foot is pedaling, the center of gravity of the person will swing from side to side, which is very unstable, and may even cause problems such as the inability of the gearbox to work. It is a lighter, more stable, compact and lightweight bicycle driving device.

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